| 地基承载力的广义强度安全系数 |
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| 引用本文： | 周安楠,姚仰平. 地基承载力的广义强度安全系数[J]. 工业建筑, 2005, 35(2): 69-72,76 |
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| 作者姓名： | 周安楠 姚仰平 |
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| 作者单位： | 北京航空航天大学,土木工程系,北京,100083;北京航空航天大学,土木工程系,北京,100083 |
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| 摘 要： | 基于太沙基假定的地基滑动面 ,分析了地基土单元的平面应变应力状态 ,并引入SMP三维强度准则和变换应力空间 ,将变换应力空间内等平均主应力条件下的强度包线半径与偏应力半径平均值的比值定义为广义强度安全系数。通过工程实例 ,解释了地基承载力安全系数和广义强度安全系数的相互关系。
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| 关 键 词： | 平面应变 SMP准则 变换应力 等平均主应力 安全系数 |
GENERALIZED STRENGTH SAFETY FACTOR OF FOUNDATION BEARING CAPACITY |
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| Zhou Annan,Yao Yangping. GENERALIZED STRENGTH SAFETY FACTOR OF FOUNDATION BEARING CAPACITY[J]. Industrial Construction, 2005, 35(2): 69-72,76 |
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| Authors: | Zhou Annan Yao Yangping |
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| Abstract: | Based on glide surface presumed by Terzaghi,plane strain-stress state of ground soil cell is analyzed and SMP criterion and transformed stress space are also introduced.According to the above,the ratio of semidiameter of strength envelope to average semidiameter of deviator stress in the transformed stress space with the equal mean stress is defined as the generalized strength safety factor.The relationship between foundation bearing capacity safety factor and that of generalized strength safety is also explained by geotechnical engineering practice. |
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| Keywords: | plane strain SMP criterion transformed stress equal mean principal stress safety factor |
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